A fluorophore-labeled human cell. A fluorophore (or fluorochrome, similarly to a chromophore) is a fluorescent chemical compound that can re-emit light upon light excitation. Fluorophores typically contain several combined aromatic groups, or planar or cyclic molecules with several Ï bonds.
IN THIS TOPIC. Pregnancy symptoms are different for everyone, and can vary from month to month and even from pregnancy to pregnancy. Find out what to expect, from the earliest pregnancy symptoms to the wooziness of morning sickness to the aches and pains of your third trimester.
Nausea and vomiting can be one of the first signs of pregnancy and usually begins around the 6th week of pregnancy. It can occur at anytime of the day, and for most women it seems to stop after the 12th week of pregnancy. Morning sickness is not harmful to you or your baby, but if you experience excessive vomiting and cannot manage to keep your food down, you may have hyperemesis gravidarum.